3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $result = 'get_array_log'; echo preg_replace_callback( '#([a-zA-Z])(?=[A-Z])#', function( array $matches ) { print_r( $matches ); exit; return ''; }, $result )
Output for 5.4.0 - 5.4.15
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in /in/hVub2 on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.25
Parse error: syntax error, unexpected $end, expecting ',' or ';' in /in/hVub2 on line 9
Process exited with code 255.